Post fastening for loose-leaf binders



Patented Dec. 8, 1925.

UNITED STATES PATENT oFricE.

EMIL H. FISCHER, OF ll/lIILUAUKEE, WISCONSIN, ASSIGNOR T011. 0. MILLER (10., OF

MILWAUKEE, WISCONSIN, A CORIORATION OF WISCONSIN. I

rosr FASTENVINGYFOR Loose-near iamnnns.

Application filed December 12, 1922. Serial No. 606,407.

To all whom it may concern:

Be it known that I, EMIL H. Frsonnn, a citizen of the United States, and resident of Milwaukee, in the county'of Milwaukee and State of Wisconsin, haveinvented certain new and useful Improvements in Post Fastenings for Loose-Leaf Binders andI do hereby declare that the following is afull, clear, and exact description thereof.

My invention relates to post fastening devices which are more particularly adapted for securing the coupling posts to the bmding strip of a loose leaf binder.

The general objects of the invent on are to provide improved means for securing the post to the strip in a manner whlch w1ll effectively prevent the same from becomlng detached or loosened, and more particularly to provide means for positively preventmg longitudinal and rotary movement thereof.

In describing my invention, reference will be had to the accompanying drawing, in which- Figure 1 represents a side elevation of a binder strip with my invention embodied therein, a portion thereof being shown in section.

Figure 2 is a transverse sectional view on V the line 22 of Figure 1.

Figure 3 is a similar view of a modified form of the invention.

Figure 4 is a similar view showing a further modification, and

Figure 5 shows sectional and bottom plan view respectively, of a further'modification of the invention. 7

Referring more particularly to the drawing, the numeral 10 designates a binder strip to which a coupling post 11 is secured with its head 12 abutting against the under side thereof.

In the form illustrated in Figures 1 and 2, the post 11 is provided with a circumferential kerf 13, adjacent the head 12, and the post is secured by stampin the edges of the strip into the kerf, thus e ectively preventing the removal of the post. By the same operation, a tongue 15 may be stamped out of the strip and into the head 12 so asto prevent any possible rotation of the post.

In the modification shown in Figure 3, the strip 10 may be formed with a flange 16 adjacent which the head 12 is formed with a flattened side. In securing the same, a tongue 17 is stamped out of the flange 16 and into the head 12,- thus effectively secure ing the same against longitudinal or rotary movement.

In the form shown in Figure'e'c, aipair of tongues 18 and 19 are stamped out of the inwardly and stamped into the head.

In the modification shown in Figure 5, a tongue 20 is folded over the head to secure the post against longitudinal movement, and a pair of recesses 21 and 22 are stamped into 00 I strip 10 adjacent the head 12,'and are folded the surface ofrthehead and form corresponding projections'23'and 2 1, which engage corresponding recesses in the striplO and effectively prevent rotation of the post.

It will be seen that all of the forms above described are broadly for the same purpose and embody the same inventive principle, that is'to say,they form keys to preventiongitudinal or rotary movement of the post, and are of simple construction which may be formed by. a single stamping operation.

It will also be readily observed that other,

minor modifications may be made and I do I not therefore, wish to be limited bythe precise structure shown, but I wish it understood that the invention comprises all equivalents which fall within the scope of the ap-v pended claims.

I claim:

1. In aloose leaf metallic binder, a binder "strip having a coupling post extending upwardly therethrough with the head of the post in engagement with said strip, the postbeing formed with a circumferential kerf adjacent the head, the material of the strip being stamped into said kerf, and means for preventing rotary movement of the post with i I respect to the strip. r 1

2. In a loose leaf metallic binder, a binder strip having a coupling post extendin therethrough with the head of the post a utting said strip, and means for keying'said post against both longitudinal and rotary move- I ment with respect to the strip.

3. In a loose leaf binder, a binder strip having a coupling post extending upwardly therethrough with the head of the post in engagement with said strip, the material of the strip and post being stamped together to form keys preventing both longitudinalv and rotarymovement of the post with respect to the strip.

4. In a loose lea-f binder, a binder strip having a coupling post extending upwardly therethrough with the head of the post in engagement With said strip, the, post being formed with a circumferential kerf adJaCent the head, thelinaterial of the strip being stamped into said kerf, and a lip out from the strip and stamped into the head of'the post to'form a key preventing it fromrotary movement with respect to the strip.

5. In a loose leaf binder, a metallic binding stri a coupling post havlng an enlarged integra head and a kerr" CII'CIUHfBTGHtlflHY snrronndin said post immediately adjacent said head, said post pro ecting through said strip With the head in Contact with one side of said strip, said strip being swagedinwto said kerf, and means for pretentingrelative rotary inotionot said post and strip.

6. In a loose leaf-binder, a metallicbinding strip, a coupling post having an enlarged integralhead and a kerf circumferentially surrounding said'post immediately adjacent said head, said post projecting through said strip with the head inwoontaict With one side of said strip,jsaid strip being!- terloeking of'the lip of the stripwith the cutout: portion of the post head.

In testimony that I clairnthe foregoing-I have hereunto set'my hand at Milwaukee, in

theeounty of Milwaukee and :State 0fWis-- consin.

EMIL FISCHER. 

